Fig. 1: Schematics of the working principle of a miniature computational spectrometer and its plasmonic nanoparticles-in-cavity microfilters.
From: Miniature computational spectrometer with a plasmonic nanoparticles-in-cavity microfilter array
The top section illustrates the working principle of our proposed miniature computational spectrometer, while the bottom section shows the cross-section of the plasmonic microfilter array, in which both the size of AgNPs and the length of FP cavities are designed to create a large-scale spectrum-disparate microfilter array. A more detailed diagram of the spectrum reconstruction algorithm is shown in the Supplementary Information.
